Costs tend to asymptote at the 100 kg level so little additional cost improvement occurs at larger runs. Economic modeling of the continuous Czochralski process indicates that for 10 cm diameter crystal, 100 kg furnace runs of four or five crystals each are near-optimal. The best arrangement tested to date is a vertical, cylindrical graphite heater containing small fused silicon test tube liner in which the incoming silicon is melted and flows into the primary crucible. Numerous premelter configurations were tested both in laboratory-scale equipment as well as in the actual furnace. The basic furnace is operational and several trial crystals were grown in the batch mode. LSSA large area silicon sheet task continuous Czochralski process developmentĪ Czochralski crystal growing furnace was converted to a continuous growth facility by installation of a premelter to provide molten silicon flow into the primary crucible. Economically, the continuous Czochralski meets near-term cost goals for silicon sheet material. ![]() Elimination of this oxide buildup will require extensive study and experimentation and the ultimate success of continuous Czochralski depends on a successful solution to this problem. A major contributor to the particulate problem was severe silicon oxide buildup on the premelter which would ultimately drop into the primary melt. High perfection crystal was not obtained, however, due primarily to particulate contamination of the melt. Using a vertical, cylindrical graphite heater containing a small fused quartz test tube linear from which the molten silicon flowed out the bottom, approximately 83 cm of nominal 5 cm diamter crystal was grown with continuous melt addition furnished by the test tube premelter. Scientific Visualization will be useful to practitioners of scientific visualization, students interested in both overview and advanced topics, and those interested in knowing more about the visualization process.LSA Large Area Silicon Sheet Task Continuous Czochralski Process DevelopmentĪ commercial Czochralski crystal growing furnace was converted to a continuous growth facility by installation of a small, in-situ premelter with attendant silicon storage and transport mechanisms. Scalability in scientific visualization is critical as data grows and computational devices range from hand-held mobile devices to exascale computational platforms.Biomedical is a vast field with select subtopics addressed from scanning methodologies to structural applications to biological applications,.Multifield visualization addresses the need to depict multiple data at individual locations and the combination of multiple datasets,.Uncertainty visualization deals with uncertain data from simulations or sampled data, uncertainty due to the mathematical processes operating on the data, and uncertainty in the visual representation,.Based on the seminar that took place in Dagstuhl, Germany in June 2011, this contributed volume studies the four important topics within the scientific visualization field: uncertainty visualization, multifield visualization, biomedical visualization and scalable visualization.
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